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/*
* sbt IO
* Copyright Scala Center, Lightbend, and Mark Harrah
*
* Licensed under Apache License 2.0
* SPDX-License-Identifier: Apache-2.0
*
* See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*/
package sbt.io
import java.io.{ File, IOException }
import java.net.URL
import java.nio.file.attribute._
import java.nio.file.{
FileSystem,
FileVisitOption,
FileVisitResult,
FileVisitor,
Files,
LinkOption,
Path => NioPath
}
import sbt.io.PathFinder.GlobPathFinder
import sbt.nio.file.{ AnyPath, FileAttributes, FileTreeView, Glob }
import sbt.nio.file.Glob.GlobOps
import scala.collection.JavaConverters._
import scala.collection.mutable
final class RichFile(val asFile: File) extends AnyVal with RichNioPath {
def /(component: String): File = if (component == ".") asFile else new File(asFile, component)
/** True if and only if the wrapped file exists. */
def exists: Boolean = asFile.exists
/** True if and only if the wrapped file is a directory. */
def isDirectory: Boolean = asFile.isDirectory
/** The last modified time of the wrapped file. */
def lastModified: Long = IO.getModifiedTimeOrZero(asFile)
/**
* True if and only if the wrapped file `asFile` exists and the file 'other'
* does not exist or was modified before the `asFile`.
*/
def newerThan(other: File): Boolean = Path.newerThan(asFile, other)
/**
* True if and only if the wrapped file `asFile` does not exist or the file `other`
* exists and was modified after `asFile`.
*/
def olderThan(other: File): Boolean = Path.newerThan(other, asFile)
/** The wrapped file converted to a URL. */
def asURL: URL = asFile.toURI.toURL
def absolutePath: String = asFile.getAbsolutePath
/** The last component of this path. */
def name: String = asFile.getName
def baseAndExt: (String, String) = {
val nme = name
val dot = nme.lastIndexOf('.')
if (dot < 0) (nme, "") else (nme.substring(0, dot), nme.substring(dot + 1))
}
/**
* The extension part of the name of this path.
* This is the part of the name after the last period, or the empty string if there is no period.
*/
def ext: String = baseAndExt._2
/**
* The base of the name of this path.
* This is the part of the name before the last period, or the full name if there is no period.
*/
def base: String = baseAndExt._1
def relativize(sub: File): Option[File] = IO.relativizeFile(asFile, sub)
def relativeTo(base: File): Option[File] = IO.relativizeFile(base, asFile)
def hash: Array[Byte] = Hash(asFile)
def hashString: String = Hash.toHex(hash)
def hashStringHalf: String = Hash.halve(hashString)
override def asPath: NioPath = asFile.toPath
override private[sbt] def linkOptions: Vector[LinkOption] = Vector.empty
def withLinkOptions(linkOption: LinkOption*): LinkOptionPath =
new LinkOptionPath(asPath, linkOption.toVector)
}
final class LinkOptionPath(p: NioPath, lo: Vector[LinkOption]) extends RichNioPath {
override val asPath: NioPath = p
private[sbt] val linkOptions: Vector[LinkOption] = lo
}
sealed trait RichNioPath extends Any {
def asPath: NioPath
private[sbt] def linkOptions: Vector[LinkOption]
/**
* Returns this file's POSIX permissions.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def permissions: Set[PosixFilePermission] =
Files.getPosixFilePermissions(asPath, linkOptions: _*).asScala.toSet
/**
* Returns this file's POSIX permissions.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def permissionsAsString: String =
PosixFilePermissions.toString(permissions.asJava)
/**
* Updates permission of this file.
* This operation requires underlying filesystem to support `IO.isPosix`.
*
* @param permissions the permissions to add
*/
def setPermissions(permissions: Set[PosixFilePermission]): Unit = {
Files.setPosixFilePermissions(asPath, permissions.asJava)
()
}
/**
* Adds permission to this file.
* This operation requires underlying filesystem to support `IO.isPosix`.
*
* @param permission the permission to add
*/
def addPermission(permission: PosixFilePermission): Unit =
setPermissions(permissions + permission)
/**
* Removes permission from this file.
* This operation requires underlying filesystem to support `IO.isPosix`.
*
* @param permission the permission to remove
*/
def removePermission(permission: PosixFilePermission): Unit =
setPermissions(permissions - permission)
/**
* Tests if this file has the given permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*
* @param permission the permission to remove
*/
def testPermission(permission: PosixFilePermission): Boolean =
permissions(permission)
/**
* Tests if this file has the owner+read permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOwnerReadable: Boolean =
testPermission(PosixFilePermission.OWNER_READ)
/**
* Tests if this file has the owner+write permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOwnerWritable: Boolean =
testPermission(PosixFilePermission.OWNER_WRITE)
/**
* Tests if this file has the owner+execute permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOwnerExecutable: Boolean =
testPermission(PosixFilePermission.OWNER_EXECUTE)
/**
* Tests if this file has the group+read permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isGroupReadable: Boolean =
testPermission(PosixFilePermission.GROUP_READ)
/**
* Tests if this file has the group+write permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isGroupWritable: Boolean =
testPermission(PosixFilePermission.GROUP_WRITE)
/**
* Tests if this file has the group+execute permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isGroupExecutable: Boolean =
testPermission(PosixFilePermission.GROUP_EXECUTE)
/**
* Tests if this file has the others+read permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOthersReadable: Boolean =
testPermission(PosixFilePermission.OTHERS_READ)
/**
* Tests if this file has the others+write permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOthersWritable: Boolean =
testPermission(PosixFilePermission.OTHERS_WRITE)
/**
* Tests if this file has the others+execute permission.
* This operation requires underlying filesystem to support `IO.isPosix`.
*/
def isOthersExecutable: Boolean =
testPermission(PosixFilePermission.OTHERS_EXECUTE)
def attributes: BasicFileAttributes =
Files.readAttributes(asPath, classOf[BasicFileAttributes], linkOptions: _*)
def posixAttributes: PosixFileAttributes =
Files.readAttributes(asPath, classOf[PosixFileAttributes], linkOptions: _*)
def dosAttributes: DosFileAttributes =
Files.readAttributes(asPath, classOf[DosFileAttributes], linkOptions: _*)
def aclFileAttributeView: AclFileAttributeView =
Files.getFileAttributeView(asPath, classOf[AclFileAttributeView], linkOptions: _*)
/**
* Returns the owner of a file.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*/
def owner: UserPrincipal =
Files.getOwner(asPath, linkOptions: _*)
/**
* Returns the owner of a file.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*/
def ownerName: String = owner.getName
/**
* Returns the group owner of a file.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*/
def group: GroupPrincipal = posixAttributes.group()
/**
* Returns the group owner of a file.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*/
def groupName: String = group.getName
/**
* Updates the file owner.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*
* @param owner the new group owner
*/
def setOwner(owner: String): Unit = {
val fileSystem: FileSystem = asPath.getFileSystem
Files.setOwner(asPath, fileSystem.getUserPrincipalLookupService.lookupPrincipalByName(owner))
()
}
/**
* Updates the group owner of the file.
* This operation requires underlying filesystem to support `IO.hasFileOwnerAttributeView`.
*
* @param group the new group owner
*/
def setGroup(group: String): Unit = {
val fileSystem: FileSystem = asPath.getFileSystem
Files.setOwner(
asPath,
fileSystem.getUserPrincipalLookupService.lookupPrincipalByGroupName(group)
)
()
}
}
object Path extends Mapper {
def apply(f: File): RichFile = new RichFile(f)
def apply(f: String): RichFile = new RichFile(new File(f))
def fileProperty(name: String): File = new File(System.getProperty(name))
def userHome: File = fileProperty("user.home")
def absolute(file: File): File = new File(file.toURI.normalize).getAbsoluteFile
def makeString(paths: Seq[File]): String = makeString(paths, File.pathSeparator)
def makeString(paths: Seq[File], sep: String): String = {
val separated = paths.map(_.getAbsolutePath)
separated.find(_ contains sep).foreach(p => sys.error(s"Path '$p' contains separator '$sep'"))
separated.mkString(sep)
}
def newerThan(a: File, b: File): Boolean =
a.exists && (!b.exists || IO.getModifiedTimeOrZero(a) > IO.getModifiedTimeOrZero(b))
/** The separator character of the platform. */
val sep: Char = java.io.File.separatorChar
def toURLs(files: Seq[File]): Array[URL] = files.map(_.toURI.toURL).toArray
private[sbt] val defaultLinkOptions: Vector[LinkOption] = Vector.empty
private[sbt] val defaultDescendantHandler: (File, FileFilter, mutable.Set[File], Int) => Unit =
if ("native" == sys.props.getOrElse("sbt.pathfinder", ""))
DescendantOrSelfPathFinder.native
else DescendantOrSelfPathFinder.default
private[sbt] val defaultChildHandler: (File, FileFilter) => Seq[File] =
if ("native" == sys.props.getOrElse("sbt.pathfinder", "")) {
val fileTreeView = FileTreeView.default
(file, filter) =>
fileTreeView
.list(Glob(file.toPath, AnyPath))
.flatMap { case (path: NioPath, attrs: FileAttributes) =>
if (filter.accept(new AttributedFile(path, attrs))) Some(path.toFile) else None
}
} else { (file, filter) =>
IO.wrapNull(file.listFiles(filter)).toSeq
}
private class AttributedFile(path: NioPath, attributes: FileAttributes)
extends File(path.toString) {
override def isDirectory: Boolean = attributes.isDirectory
override def isFile: Boolean = attributes.isRegularFile
def isSymbolicLink: Boolean = attributes.isSymbolicLink
}
}
object PathFinder {
/** A PathFinder that always produces the empty set of Paths. */
val empty: PathFinder = new PathFinder {}
def apply(file: File): PathFinder = new SingleFile(file)
def apply(files: => Traversable[File]): PathFinder = new PathFinder {
override def get(): Seq[File] = files.toIndexedSeq.distinct
}
def strict(files: Traversable[File]): PathFinder = apply(files)
sealed trait Combinator extends Any {
/** The union of the paths found by this PathFinder with the paths found by 'paths'. */
def +++(paths: PathFinder): PathFinder
/** Excludes all paths from excludePaths from the paths selected by this PathFinder. */
def ---(excludePaths: PathFinder): PathFinder
/**
* Applies `mapper` to each path selected by this PathFinder
* and returns the path paired with the non-empty result.
* If the result is empty (None) and `errorIfNone` is true, an exception is thrown.
* If `errorIfNone` is false, the path is dropped from the returned Traversable.
*/
def pair[T](mapper: File => Option[T], errorIfNone: Boolean = true): Seq[(File, T)]
/**
* Selects all descendant paths with a name that matches include
* and do not have an intermediate path with a name that matches intermediateExclude.
*
* Typical usage is descendantsExcept("*.jar", ".svn")
*/
def descendantsExcept(include: FileFilter, intermediateExclude: FileFilter): PathFinder
/**
* Only keeps paths for which `f` returns true.
* It is non-strict, so it is not evaluated until the returned finder is evaluated.
*/
def filter(f: File => Boolean): PathFinder
/** Non-strict flatMap: no evaluation occurs until the returned finder is evaluated. */
def flatMap(f: File => PathFinder): PathFinder
/** Evaluates this finder and converts the results to an `Array` of `URL`s. */
def getURLs(): Array[URL]
/** Evaluates this finder and converts the results to a distinct sequence of absolute path strings. */
def getPaths(): Seq[String]
/**
* Create a PathFinder from this one where each path has a unique name.
* A single path is arbitrarily selected from the set of paths with the same name.
*/
def distinct(): PathFinder
/**
* Constructs a string by evaluating this finder, converting the resulting Paths to absolute path strings,
* and joining them with the platform path separator.
*/
def absString(): String
}
object Combinator {
implicit class SingleFilePathFinderCombinator(val file: File) extends AnyVal with Combinator {
override def +++(paths: PathFinder): PathFinder = new SingleFile(file) +++ paths
override def ---(excludePaths: PathFinder): PathFinder = new SingleFile(file) --- excludePaths
override def pair[T](mapper: File => Option[T], errorIfNone: Boolean): Seq[(File, T)] =
new SingleFile(file).pair(mapper)
override def descendantsExcept(
include: FileFilter,
intermediateExclude: FileFilter
): PathFinder =
new SingleFile(file).descendantsExcept(include, intermediateExclude)
override def filter(f: File => Boolean): PathFinder = new SingleFile(file).filter(f)
override def flatMap(f: File => PathFinder): PathFinder = new SingleFile(file).flatMap(f)
override def getURLs(): Array[URL] = new SingleFile(file).getURLs()
override def getPaths(): Seq[String] = new SingleFile(file).getPaths()
override def distinct(): PathFinder = new SingleFile(file).distinct()
override def absString(): String = Path.makeString(new SingleFile(file).get())
}
}
private[sbt] final class GlobPathFinder(val glob: Glob) extends PathFinder {
override def get(): Seq[File] = {
val base = glob.base
if (glob.range._1 == 0 && glob.range._2 == 0) {
if (Files.exists(base)) base.toFile :: Nil else Nil
} else if (glob.range._2 > 1) {
val files = new java.util.LinkedHashSet[File].asScala
if (glob.descendentMatches(glob.base)) files.add(glob.base.toFile)
Path.defaultDescendantHandler(glob.base.toFile, glob.toFileFilter, files, glob.range._2)
files.toIndexedSeq
} else {
Path.defaultChildHandler(glob.base.toFile, glob.toFileFilter)
}
}
}
}
/**
* A path finder constructs a set of paths.
* The set is evaluated by a call to the get method.
* The set will be different for different calls to get if the underlying filesystem has changed.
*/
sealed abstract class PathFinder extends PathLister with PathFinderDefaults {
/**
* Evaluates this finder and converts the results to a `Seq` of distinct `File`s.
* The files returned by this method will reflect the underlying filesystem at the time of calling.
* If the filesystem changes, two calls to this method might be different.
*/
override def get(): Seq[File] = Nil
}
sealed trait PathLister {
/**
* Evaluates this finder and converts the results to a `Seq` of distinct `File`s.
* The files returned by this method will reflect the underlying filesystem at the time of calling.
* If the filesystem changes, two calls to this method might be different.
*/
def get(): Seq[File]
}
object PathLister {
private class SingleFilePathLister(private val file: File) extends PathLister {
override def get(): Seq[File] = new GlobPathFinder(Glob(file)).get()
override def toString: String = s"SingleFilePathLister($file)"
override def equals(o: Any): Boolean = o match {
case that: SingleFilePathLister => this.file == that.file
case _ => false
}
override def hashCode: Int = file.hashCode
}
def apply(file: File): PathLister = new SingleFilePathLister(file)
}
sealed trait PathFinderDefaults extends PathFinder.Combinator {
self: PathFinder =>
import Path._
import syntax._
/**
* This is a vestigial implementation detail that shouldn't have made it into the base class
* definition. It can't be moved into [[PathFinderImpl]] without breaking binary compatibility
* unfortunately.
*
* @param fileSet the result set to append files to
*/
private[sbt] def addTo(fileSet: mutable.Set[File]): Unit = ()
/** The union of the paths found by this PathFinder with the paths found by 'paths'. */
override def +++(paths: PathFinder): PathFinder = new Paths(this, paths)
/** Excludes all paths from excludePaths from the paths selected by this PathFinder. */
override def ---(excludePaths: PathFinder): PathFinder = new ExcludeFiles(this, excludePaths)
/**
* Constructs a new finder that selects all paths with a name that matches filter and are
* descendants of paths selected by this finder.
*
* @param filter only include files that this filter accepts
*/
def globRecursive(filter: FileFilter): PathFinder =
new DescendantOrSelfPathFinder(this, filter)
/**
* Constructs a new finder that selects all paths with a name that matches filter and are
* descendants of paths selected by this finder.
*
* @param filter only include files that this filter accepts
* @param walker use this walker to traverse the file system
*/
def globRecursive(
filter: FileFilter,
walker: (File, FileFilter, mutable.Set[File]) => Unit
): PathFinder =
new DescendantOrSelfPathFinder(this, filter, walker)
/** Alias of globRecursive. */
final def **(filter: FileFilter): PathFinder = globRecursive(filter)
def allPaths: PathFinder = **(AllPassFilter)
/**
* Constructs a new finder that selects all paths with a name that matches filter
* and are immediate children of paths selected by this finder.
*
* @param filter only include files that this filter accepts
*/
def glob(filter: FileFilter): PathFinder = new ChildPathFinder(this, filter)
/** Alias of glob */
final def *(filter: FileFilter): PathFinder = glob(filter)
/**
* Constructs a new finder that selects all paths with name literal
* that are immediate children of paths selected by this finder.
*/
def /(literal: String): PathFinder = new ChildPathFinder(this, new ExactFilter(literal))
/**
* Constructs a new finder that selects all paths with name literal
* that are immediate children of paths selected by this finder.
*/
final def \(literal: String): PathFinder = this / literal
/**
* Applies `mapper` to each path selected by this PathFinder
* and returns the path paired with the non-empty result.
* If the result is empty (None) and `errorIfNone` is true, an exception is thrown.
* If `errorIfNone` is false, the path is dropped from the returned Traversable.
*/
def pair[T](mapper: File => Option[T], errorIfNone: Boolean = true): Seq[(File, T)] = {
val apply = if (errorIfNone) (a: File) => mapper(a) orElse fail(a) else mapper
for (file <- get(); mapped <- apply(file)) yield file -> mapped
}
/**
* Selects all descendant paths with a name that matches include
* and do not have an intermediate path with a name that matches intermediateExclude.
*
* Typical usage is descendantsExcept("*.jar", ".svn")
*/
override def descendantsExcept(include: FileFilter, intermediateExclude: FileFilter): PathFinder =
(this ** include) --- (this ** intermediateExclude ** include)
/**
* Only keeps paths for which `f` returns true.
* It is non-strict, so it is not evaluated until the returned finder is evaluated.
*/
override final def filter(f: File => Boolean): PathFinder = PathFinder(get() filter f)
/** Non-strict flatMap: no evaluation occurs until the returned finder is evaluated. */
override final def flatMap(f: File => PathFinder): PathFinder =
PathFinder(get().flatMap(p => f(p).get()))
/** Evaluates this finder and converts the results to an `Array` of `URL`s. */
override final def getURLs(): Array[URL] = get().toArray.map(_.toURI.toURL)
/** Evaluates this finder and converts the results to a distinct sequence of absolute path strings. */
override final def getPaths(): Seq[String] = get().map(_.absolutePath)
/**
* Create a PathFinder from this one where each path has a unique name.
* A single path is arbitrarily selected from the set of paths with the same name.
*/
override def distinct(): PathFinder = PathFinder {
get().map(p => (p.asFile.getName, p)).toMap.values
}
/**
* Constructs a string by evaluating this finder, converting the resulting Paths to absolute path strings,
* and joining them with the platform path separator.
*/
final def absString(): String = Path.makeString(get())
}
private abstract class PathFinderImpl extends PathFinder {
/**
* Evaluates this finder and converts the results to a `Seq` of distinct `File`s.
* The files returned by this method will reflect the underlying filesystem at the time of calling.
* If the filesystem changes, two calls to this method might be different.
*/
override final def get(): Seq[File] = {
import scala.collection.JavaConverters._
val pathSet: mutable.Set[File] = new java.util.LinkedHashSet[File].asScala
addTo(pathSet)
pathSet.toSeq
}
private[sbt] def addTo(files: mutable.Set[File]): Unit
}
private class SingleFile(asFile: File) extends PathFinderImpl {
override private[sbt] def addTo(fileSet: mutable.Set[File]): Unit =
if (asFile.exists) {
fileSet += asFile; ()
}
override def toString: String = s"SingleFile($asFile)"
override def equals(o: Any): Boolean = o match {
case that: SingleFile => this._asFile == that._asFile
case _ => false
}
override def hashCode: Int = asFile.hashCode
private def _asFile = asFile
}
private abstract class FilterFiles extends PathFinderImpl with FileFilter {
def parent: PathFinder
def filter: FileFilter
final def accept(file: File): Boolean = filter.accept(file)
private[this] val getFiles: (File, FileFilter) => Seq[File] = Path.defaultChildHandler
protected def handleFile(file: File, fileSet: mutable.Set[File]): Unit =
for (matchedFile <- getFiles(file, this))
fileSet += new File(file, matchedFile.getName)
override def toString: String = s"FilterFiles($parent, $filter)"
override def equals(o: Any): Boolean = o match {
case that: FilterFiles => this.parent == that.parent && this.filter == that.filter
case _ => false
}
override def hashCode: Int = (parent.hashCode * 31) ^ filter.hashCode
}
private class DescendantOrSelfPathFinder(
val parent: PathFinder,
val filter: FileFilter,
handleFileDescendant: (File, FileFilter, mutable.Set[File]) => Unit
) extends FilterFiles {
def this(parent: PathFinder, filter: FileFilter) =
this(parent, filter, Path.defaultDescendantHandler(_, _, _, Int.MaxValue))
override private[sbt] def addTo(fileSet: mutable.Set[File]): Unit = {
for (file <- parent.get()) {
if (accept(file)) fileSet += file
handleFileDescendant(file, filter, fileSet)
}
}
override def toString: String = s"DescendantOrSelfPathFinder($parent, $filter)"
}
private object DescendantOrSelfPathFinder {
def native(file: File, filter: FileFilter, fileSet: mutable.Set[File], depth: Int): Unit = {
try {
if (filter.accept(file)) fileSet += file
if (depth > 0)
FileTreeView.default.list(file.toPath).foreach { case (path, attributes) =>
val file = path.toFile
if (
attributes.isRegularFile && filter.accept(new File(path.toString) {
override def isDirectory: Boolean = attributes.isDirectory
override def isFile: Boolean = attributes.isRegularFile
})
) {
fileSet += file
} else if (attributes.isDirectory) {
native(file, filter, fileSet, depth - 1)
}
}
()
} catch {
case _: IOException =>
}
}
def default(file: File, filter: FileFilter, fileSet: mutable.Set[File], depth: Int): Unit = {
Files.walkFileTree(
file.toPath,
mutable.Set(FileVisitOption.FOLLOW_LINKS).asJava,
depth - 1,
new FileVisitor[NioPath] {
override def preVisitDirectory(
dir: NioPath,
attrs: BasicFileAttributes
): FileVisitResult = {
val file = dir.toFile
if (filter.accept(file)) fileSet += file
FileVisitResult.CONTINUE
}
override def visitFile(file: NioPath, attrs: BasicFileAttributes): FileVisitResult = {
val ioFile = file.toFile
if (filter.accept(ioFile)) fileSet += ioFile
FileVisitResult.CONTINUE
}
override def visitFileFailed(file: NioPath, exc: IOException): FileVisitResult =
FileVisitResult.SKIP_SUBTREE
override def postVisitDirectory(dir: NioPath, exc: IOException): FileVisitResult =
FileVisitResult.CONTINUE
}
)
()
}
}
private class ChildPathFinder(val parent: PathFinder, val filter: FileFilter) extends FilterFiles {
override private[sbt] def addTo(fileSet: mutable.Set[File]): Unit =
for (file <- parent.get())
handleFile(file, fileSet)
override def toString: String = s"ChildPathFinder($parent, $filter)"
}
private class Paths(a: PathFinder, b: PathFinder) extends PathFinder {
override def get(): Seq[File] = (a.get() ++ b.get()).distinct
override def toString: String = s"Paths($a, $b)"
override def equals(o: Any): Boolean = o match {
case that: Paths => this._a == that._a && this._b == that._b
case _ => false
}
override def hashCode: Int = (a.hashCode * 31) ^ b.hashCode
private def _a: PathFinder = a
private def _b: PathFinder = b
}
private class ExcludeFiles(include: PathFinder, exclude: PathFinder) extends PathFinder {
override def get(): Seq[File] = (include.get().toSet -- exclude.get()).toSeq
override def toString: String = s"ExcludeFiles($include, $exclude)"
override def equals(o: Any): Boolean = o match {
case that: ExcludeFiles => this._include == that._include && this._exclude == that._exclude
case _ => false
}
override def hashCode: Int = (include.hashCode * 31) ^ exclude.hashCode
private def _include: PathFinder = include
private def _exclude: PathFinder = exclude
}
